A fast JSON parser/generator for C++ with both SAX/DOM style API
RapidJSON is a JSON parser and generator for C++. It was inspired by RapidXml. RapidJSON is small but complete. It supports both SAX and DOM style API. The SAX parser is only a half thousand lines of code. RapidJSON is fast. Its performance can be comparable to strlen(). It also optionally supports SSE2/SSE4.2 for acceleration. RapidJSON is self-contained and header-only.
OpenC++ is C++ frontend library (parser+typechecker+DOM/MOP) and source-to-source translator. OpenC++ enables development of C++ tools, language extensions, domain specific compiler optimizations and runtime metaobject protocols.